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[/] [or1k_old/] [trunk/] [newlib/] [newlib/] [libc/] [include/] [reent.h] - Rev 57
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/* This header file provides the reentrancy. */ /* The reentrant system calls here serve two purposes: 1) Provide reentrant versions of the system calls the ANSI C library requires. 2) Provide these system calls in a namespace clean way. It is intended that *all* system calls that the ANSI C library needs be declared here. It documents them all in one place. All library access to the system is via some form of these functions. There are three ways a target may provide the needed syscalls. 1) Define the reentrant versions of the syscalls directly. (eg: _open_r, _close_r, etc.). Please keep the namespace clean. When you do this, set "syscall_dir" to "syscalls" in configure.in, and add -DREENTRANT_SYSCALLS_PROVIDED to target_cflags in configure.in. 2) Define namespace clean versions of the system calls by prefixing them with '_' (eg: _open, _close, etc.). Technically, there won't be true reentrancy at the syscall level, but the library will be namespace clean. When you do this, set "syscall_dir" to "syscalls" in configure.in. 3) Define or otherwise provide the regular versions of the syscalls (eg: open, close, etc.). The library won't be reentrant nor namespace clean, but at least it will work. When you do this, add -DMISSING_SYSCALL_NAMES to target_cflags in configure.in. Stubs of the reentrant versions of the syscalls exist in the libc/reent source directory and are used if REENTRANT_SYSCALLS_PROVIDED isn't defined. They use the native system calls: _open, _close, etc. if they're available (MISSING_SYSCALL_NAMES is *not* defined), otherwise open, close, etc. (MISSING_SYSCALL_NAMES *is* defined). */ /* WARNING: All identifiers here must begin with an underscore. This file is included by stdio.h and others and we therefore must only use identifiers in the namespace allotted to us. */ #ifndef _REENT_H_ #ifdef __cplusplus extern "C" { #endif #define _REENT_H_ #include <sys/reent.h> #include <sys/_types.h> #include <machine/types.h> #define __need_size_t #include <stddef.h> /* FIXME: not namespace clean */ struct stat; struct tms; struct timeval; struct timezone; /* Reentrant versions of system calls. */ extern int _close_r _PARAMS ((struct _reent *, int)); extern int _execve_r _PARAMS ((struct _reent *, char *, char **, char **)); extern int _fcntl_r _PARAMS ((struct _reent *, int, int, int)); extern int _fork_r _PARAMS ((struct _reent *)); extern int _fstat_r _PARAMS ((struct _reent *, int, struct stat *)); extern int _getpid_r _PARAMS ((struct _reent *)); extern int _kill_r _PARAMS ((struct _reent *, int, int)); extern int _link_r _PARAMS ((struct _reent *, const char *, const char *)); extern _off_t _lseek_r _PARAMS ((struct _reent *, int, _off_t, int)); extern int _open_r _PARAMS ((struct _reent *, const char *, int, int)); extern _ssize_t _read_r _PARAMS ((struct _reent *, int, void *, size_t)); extern void *_sbrk_r _PARAMS ((struct _reent *, size_t)); extern int _stat_r _PARAMS ((struct _reent *, const char *, struct stat *)); extern _CLOCK_T_ _times_r _PARAMS ((struct _reent *, struct tms *)); extern int _unlink_r _PARAMS ((struct _reent *, const char *)); extern int _wait_r _PARAMS ((struct _reent *, int *)); extern _ssize_t _write_r _PARAMS ((struct _reent *, int, const void *, size_t)); /* This one is not guaranteed to be available on all targets. */ extern int _gettimeofday_r _PARAMS ((struct _reent *, struct timeval *tp, struct timezone *tzp)); #ifdef __cplusplus } #endif #endif /* _REENT_H_ */
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